This summer, some things will be essential and one of them is Wi-Fi wireless network. Of course, Wi-Fi must be fast and the signal stable. People have no limit in pursuit of Wi-Fi network speed and signal, especially now that 500M and 1000M broadband has gradually become popular. At present, many people still need to switch to Wi-Fi 6, but the new generation of Wi-Fi 7 is almost here. According to the current development trend, as early as next summer, everyone may be able to use Wi-Fi 7.
What will change with Wi-Fi 7?
What is WiFi 7? It corresponds to IEEE 802.11, which will release a new revised standard IEEE 802.11be. It is the successor to Wi-Fi 6/6E. Compared to Wi-Fi 5 to Wi-Fi 6, the upgrade only brings a limited improvement in network speed. Wi-Fi 6 to Wi-Fi 7 is refocused on speed, with data transfer speeds of up to 40 Gbps.
What is the concept of such speed? Not to mention most of your broadband is less than 1Gbps, even the fastest interface of current computer, like Thunderbolt 3/Thunderbolt 4, USB4, etc., its speed is only 40Gbps, so the speed of Wi-Fi 7 generation can really replace wired. interface.
In order to achieve such high throughput, Wi-Fi 7 also adopts a large number of new technologies. It further extends bandwidth (up to 320 MHz), using updated 4096-QAM modulation technology to increase speed. It also makes innovative use of new technologies such as Link and Enhanced MU-MIMO.
Wi-Fi 7 signal and delay
Besides the speed, signal and delay of Wi-Fi 7 are also a concern. There are also corresponding technical solutions in Wi-Fi 7. For example, “preamble punching” can solve the problem of signal interference. Multi-channel multi-channel operation (MLO) technology allows devices to cover different frequency bands and channels, reducing latency and improving reliability.
Another significant improvement of Wi-Fi 7 is that it can accommodate more users to connect to the Internet. Wi-Fi speed drops dramatically when multiple users connect to the network. Now, a single channel on Wi-Fi7 can accommodate over 500 individual users, making connecting stress-free.
Simply put, the improvement in Wi-Fi7 is global. The theoretical bandwidth can already replace the wired network/interface, and the signal and delay have been further improved. Additionally, more devices can now connect to the network while maintaining its fast speeds.
The super-fast, low-latency features of Wi-Fi 7 not only work for mobile phones and routers, but also pave the way for expansion into other areas, such as XR reality technology. These technologies have high delay requirements and extremely high latency. A high refresh rate requires a high-speed network, and Wi-Fi7 can meet such high requirements.
Additionally, smart cars, the Internet of Things, cloud gaming, and the recently popular Metaverse also require Wi-Fi 7. Ultra-high network speed and stable, reliable connections are where Wi-Fi7 can play an advantage.
Although Wi-Fi 7 is good, the technical challenges are not small
Wi-Fi 7 is very good and powerful, but the technical challenges it brings are also difficult. There are more challenges in the RF front end to achieve a stable and high speed of 30-40Gbps. The radio frequency front end (RFFE) is one of the three main components of the wireless communication module. It is mainly intended for the mutual conversion of binary signals and wireless electromagnetic wave signals during signal transmission and reception. In the process, the binary signal is converted into a high frequency wireless electromagnetic wave signal. In the signal receiving process, the received electromagnetic wave signal is converted into a binary digital signal.
The RF frontend is mainly related to mobile cellular networks and Wi-Fi devices. According to Yole statistics on the market space of RF frontend corresponding to cellular, WiFi and GNSS, the share of RF frontend chips related to communications cellular mobiles can account for more than 80%. The market share of the RF Wi-Fi front end is around 15%. With the popularization of Wi-Fi 6 and Wi-Fi 7, the importance will gradually increase.
Qualcomm – a leader in Wi-Fi technology
In the field of RF front-end chips for mobile phones, Qualcomm achieved the largest revenue in the world in 2021. It is now accelerating the expansion of the RF chip market outside of mobile phones. In the past two years, it has made frequent moves in the field of Wi-Fi, especially the popularity of Wi-Fi 6. Inseparable from the comprehensive promotion of Qualcomm, a large number of Qualcomm technologies are in the platform. form Snapdragon (mobile phone to router). For example, OFDMA in Wi-Fi 6 is a Qualcomm technology.
In current Wi-Fi 7, 4K QAM modulation technology is also the first to be standardized by Qualcomm in Wi-Fi 6. At present, Qualcomm also continues to cooperate with the Institute of Electrical and Electronics Engineers (IEEE) or Wi-Fi Alliance (WFA) to complement Wi-Fi7 technology.
Wi-Fi 7 will be ubiquitous – The Qualcomm Wi-Fi 7 ecosystem is about to blossom
The era of Wi-Fi 7 begins. With the comprehensive upgrade of its technical experiences such as network speed, delay and capacity, we can see Wi-Fi 7 flourish in various fields in the future, just like the popularity of 5G. In addition to enjoying high-speed Internet access on mobile phones and computers at home, we will see the existence of Wi-Fi 7 in many areas. Device categories such as automotive, XR, and portable devices will all use Wi-Fi 7 to achieve strong wireless connections.
Of course, before the popularization of Wi-Fi 7, people still have a lot of work to do. Among them, the challenges of the RF front end are getting bigger and bigger. If you consider the coexistence of 5G or future 6G networks, the importance of the RF front end will become more important.